package Offer2019;

import java.util.concurrent.atomic.AtomicInteger;

//CAS compare and swap 比较并交换
public class CASDemo {

    public static void main(String[] args) {
        AtomicInteger atomicInteger = new AtomicInteger(5);

        System.out.println(atomicInteger.compareAndSet(5, 2019) + "\t current data: " + atomicInteger.get());
        System.out.println(atomicInteger.compareAndSet(5, 1024) + "\t current data: " + atomicInteger.get());

        System.out.println(atomicInteger.getAndIncrement());
    }
}
